Place in the Basin No. 12

The river featured in this month’s Place in the Basin flows past a familiar landmark—so we’re upping the challenge. Name the major tributary river pictured here and the confluences just upstream and downstream of this location. Partial credit will be given for guessing one of the two confluences correctly. 

One winner from among the correct guesses will be randomly selected to receive a copy of Turning Stones: Discovering the Life of Water by Declan McCabe.